ICD-10 Code B44.89 – Other forms of aspergillosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B44.89 – Other forms of aspergillosis
What it is
B44.89 identifies aspergillosis caused by Aspergillus species when the record does not fit a more specific ICD-10 subtype. Use it for documented fungal infection that is not classified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Aspergillosis may present with respiratory symptoms, sinus involvement, or evidence of invasive fungal disease, depending on the site and host factors.
When to use this code
Use B44.89 when the provider documents aspergillosis but does not specify allergic bronchopulmonary, aspergilloma, or another named form. It is appropriate when the note states a non-specific or other Aspergillus infection.
Check that the diagnosis is confirmed or clearly assessed in the chart, not just suspected. If a more detailed subtype or site is documented, code that specific option instead.
Do not use for
Do not use this code for allergic bronchopulmonary aspergillosis, aspergilloma, or other more specific aspergillosis categories. Also avoid it if the documentation does not support aspergillosis.
Coding tip
Look for the exact Aspergillus-related diagnosis wording in the assessment, and code the most specific documented form before defaulting to B44.89.